Fastening device



FIG. 1 is a perspective view embodying the inventive design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an environmental perspective view thereof;

FIG. 9 is an alternate environmental perspective view thereof; and,

FIG. 10 is another alternate environmental perspective view thereof.

The broken lines are directed to environment and form no part of theclaimed design.

CLAIM The ornamental design for a fastening device, as shown anddescribed.